SOLUTION: Find the probability of the event. 3 heads or 2 tails appearing in 3 tosses of a coin.

Algebra ->  Probability-and-statistics -> SOLUTION: Find the probability of the event. 3 heads or 2 tails appearing in 3 tosses of a coin.       Log On


   

Question 598395: Find the probability of the event.
3 heads or 2 tails appearing in 3 tosses of a coin.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Probability of h=.5, t=.5
3 heads: .5^3=.125
2 tails: 3C2*t^2*h
=3*.25*.5
=.375
.
.125+.375=.5
.
Ed